headers

Hi, new to the forum and new to JKs - I’ve had 4 other Jeeps over the years but nothing newer than a TJ. I’ve read the other threads about P0420/P0430 but my situation seems different. The previous owner installed Rugged Ridge headers but didn’t change the cats - so as far as either of us know...

I am new here and have been searching through the threads trying to find an answer to my question and it seems to be a topic of debate among Jeep enthusiast. I have a 2008 Jeep Wrangler Unlimited X with the 6 speed manual transmission. It has a brand new (remanufactured) Jasper engine and we...